Cardiac stents generally do not affect the long-term life expectancy and quality of survival of patients. How long a 40-year-old patient can live after surgery needs to be judged according to the patient’s own situation, and cannot be generalized. Cardiac stents are mainly used to treat myocardial infarction caused by severe stenosis or occlusion of coronary arteries. Usually, the life expectancy of patients after stenting is not affected by regular medication. However, for patients with concomitant diabetes, renal insufficiency or severe heart failure, the prognosis is usually poor and can even be directly life-threatening in severe cases. In addition, it is recommended that patients with heart disease should go to the cardiology department of the hospital regularly to review electrocardiogram, cardiac ultrasound, and coronary angiography if necessary, in order to observe the development of the disease at any time, so as to achieve early detection and early treatment. In daily life, it is necessary to pay attention to regular work and rest, avoid straining and staying up late, and take medicines according to medical advice.